Results 21 to 30 of about 9,874,780 (237)

Glide performance analysis of underwater glider with sweep wings inspired by swift

open access: yesFrontiers in Marine Science, 2022
Underwater glider (UG) is one of the most promising autonomous observation platforms for long-term ocean observation, which can glide through seawater columns by adjusting its buoyancy and attitude. Hydrodynamic shape, especially the wing parameters, has
Yanhui Wang   +8 more
doaj   +1 more source

The Pilot Design Studio Classroom [PDF]

open access: yes2001 Annual Conference Proceedings, 2020
Comment: 19 ...
Joseph Cataldo, Gerardo Del Cerro
openaire   +2 more sources

Multiuser Massive MIMO Systems With Time-Offset Pilots and Successive Interference Cancellation

open access: yesIEEE Access, 2019
This paper proposes time-offset pilots for a single-cell multiuser massive multiple-input multiple-output (MIMO) system and studies its performance under the minimum mean-squared error channel estimator and successive interference cancellation.
The Khai Nguyen   +2 more
doaj   +1 more source

Ocean Plankton Biomass Estimation with a Digital Holographic Underwater Glider

open access: yesJournal of Marine Science and Engineering, 2022
Accurate quantitative plankton observation is significant for biogeochemistry and environmental monitoring. However, current observation equipment is mostly shipborne, and there is a lack of long-term, large-scale, and low-cost methods for plankton ...
Yingjie Wang   +6 more
doaj   +1 more source

Semi-Blind Channel Estimation Relying on Optimum Pilots Designed for Multi-Cell Large-Scale MIMO Systems

open access: yesIEEE Access, 2016
Channel estimation in the presence of pilot contamination-induced inter-cell interference (ICI) is a major challenge in large-scale multiple-input multiple-output (LS-MIMO) systems.
Tiejun Lv, Shaoshi Yang, Hui Gao
doaj   +1 more source

City of Pilot Rock transportation system plan : Final report [PDF]

open access: yes, 2001
100 pp. Maps and figures included. Published June 2001. Received from ODOT January 2, 2007.The City of Pilot Rock Transportation System Plan (TSP) guides the management of existing transportation facilities and the design and implementation of future ...
David Evans and Associates   +1 more
core   +1 more source

Double Attention for Multi-Label Image Classification

open access: yesIEEE Access, 2020
Multi-label image classification is an essential task in image processing. How to improve the correlation between labels by learning multi-scale features from images is a very challenging problem.
Haiying Zhao   +3 more
doaj   +1 more source

Sparse Channel Estimation for Massive MIMO-OFDM Systems Over Time-Varying Channels

open access: yesIEEE Access, 2018
For downlink orthogonal frequency division multiplexing-based massive multiple-input-multiple-output transmission over the time-varying channel, channel estimation is very challenging due to numerous channel coefficients to be estimated.
Qibo Qin, Lin Gui, Bo Gong, Sheng Luo
doaj   +1 more source

Pilot Design based on Binary Code Multi-pilot Search

open access: yesGuangtongxin yanjiu, 2022
To solve the sparse channel estimation problem in Orthogonal Frequency Division Multiplexing (OFDM) systems, this paper presents a pilot design algorithm based on multi-pilot parallel searching and binary coding.
HUANG Hai-yan   +4 more
doaj   +3 more sources

TraceMyFish D2.3 Pilot Design and Piloting plan (v1.0)

open access: yes, 2022
The objective of WP2 “Tracking hazards and potential measures” is define and outline the piloting settings so as to track the potential hazards across the Bluebio value chain affecting food quality and safety along three crucial value chains in Europe, and more precisely: 1) the Atlantic salmon value chain, 2) the Atlantic whitefish value chain, and 3)
George-John Nychas   +7 more
openaire   +1 more source

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